1587801087 has 12 divisors (see below), whose sum is σ = 2294766864. Its totient is φ = 1057944960.

The previous prime is 1587801077. The next prime is 1587801133. The reversal of 1587801087 is 7801087851.

It is not a de Polignac number, because 1587801087 - 2⁶ = 1587801023 is a prime.

It is a super-2 number, since 2×1587801087² = 5042224583756763138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587801077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31698 + ... + 64655.

It is an arithmetic number, because the mean of its divisors is an integer number (191230572).

Almost surely, 2^1587801087 is an apocalyptic number.

1587801087 is a deficient number, since it is larger than the sum of its proper divisors (706965777).

1587801087 is a wasteful number, since it uses less digits than its factorization.

1587801087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98190 (or 98187 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 45.

The square root of 1587801087 is about 39847.2218228574. The cubic root of 1587801087 is about 1166.6270222266.

The spelling of 1587801087 in words is "one billion, five hundred eighty-seven million, eight hundred one thousand, eighty-seven".